Home / 5,279.15-7,913.24-2,781.47

Finding the Fourth Proportional to 5,279.15, 7,913.24 and 2,781.47

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Solution

The fourth proportional to 5,279.15, 7,913.24 and 2,781.47 is: 4,169.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,279.15 : 7,913.24 = 2,781.47 : x
  2. Step 2: Convert to fraction form
    5,279.15/7,913.24 = 2,781.47/x
  3. Step 3: Cross multiply
    5,279.15x = 7,913.24 × 2,781.47
  4. Step 4: Simplify right side
    5,279.15x = 22,010,455.97
  5. Step 5: Solve for x
    x = 22,010,455.97/5,279.15
  6. Step 6: Final answer
    x = 4,169.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.